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Finding the Fourth Proportional to 113,486.99, 156,718.33 and 71,119.33

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Solution

The fourth proportional to 113,486.99, 156,718.33 and 71,119.33 is: 98,211.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,486.99 : 156,718.33 = 71,119.33 : x
  2. Step 2: Convert to fraction form
    113,486.99/156,718.33 = 71,119.33/x
  3. Step 3: Cross multiply
    113,486.99x = 156,718.33 × 71,119.33
  4. Step 4: Simplify right side
    113,486.99x = 11,145,702,058.72
  5. Step 5: Solve for x
    x = 11,145,702,058.72/113,486.99
  6. Step 6: Final answer
    x = 98,211.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.